Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 361, Issue 3, Pages 550-555Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201801221
Keywords
Ullmann C-I thiolation; domino reaction; switchable; 2,3-dihydrobenzothiazinone; benzoisothiazolone
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Funding
- National Natural Science Foundation of China [21562024]
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The three-component reactions of o-iodobenzamides, elemental sulfur and dichloromethane (DCM) providing 2,3-dihydro-4H-benzo[e][1,3]thiazin-4-ones (2,3-dihydrobenzothiazinones) are accomplished via copper-catalyzed aryl C-I thiolation and subsequent N-, S-hetero ring formation. In addition, the in situ aryl C-I bond thiolation is also employed for the switchable synthesis of benzo[d]isothiazol-3(2H)-ones (benzoisothiazolones) by subjecting o-iodobenzamides, elemental sulfur to the copper-catalyzed condition with microwave irradiation.
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